Thanks for the bug report. Since pulseaudio is unchanged (the same version) in 19.04 from 18.10 I think we can exclude that as a possible cause.
1. The first idea I have about possible causes is a kernel change (and the kernel has changed a lot). Please try some older kernels from here: https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (for reference, Ubuntu 18.10 uses kernel 4.18). 2. Also, is the crackling from internal speakers or headphones? 3. Finally, please check that something hasn't accidentally enabled: Settings > Sound > Over-Amplification as that could cause crackling. ** Package changed: pulseaudio (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Summary changed: - repeating crackling noise after 19.04 upgrade + [snd_hda_codec_realtek] repeating crackling noise after 19.04 upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821663 Title: [snd_hda_codec_realtek] repeating crackling noise after 19.04 upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
